17 research outputs found
Asymmetry of magnetization curves of textured BSCCO
The dependence of magnetization on magnetic field M(H) was measured for
textured BSCCO samples for H || c, H || ab at different temperatures. Inclusion
of the pinning parameter in the Valkov-Khrustalev model [V.V. Valkov, B.P.
Khrustalev, JETP 80 (1995) 680] allowed to describe successfully the asymmetric
M(H) dependencies. The temperature and magnetic field dependencies of critical
current and pinning parameter for H || c and H || ab were estimated.Comment: 4 pages, 1 figure, will be published in Physica
Current - voltage characteristics of break junctions of high- superconductors
The current-voltage (-) characteristics of break junctions of
polycrystalline LaSrCuO,
YLuBaCuO,
BiPbSrCaCuO and composite
YBaCuO + Ag are investigated. The experimental -
curves exhibit the specific peculiarities of
superconductor/normal-metal/superconductor junctions. The relation between an
- characteristic of network of weak links and - dependencies of
typical weak links is suggested to describe the experimental data. The -
curves of typical weak links are calculated by the K\"{u}mmel - Gunsenheimer -
Nicolsky model considering the multiple Andreev reflections.Comment: 9 pages, 5 figures, 2 Table
Features of Relaxation of the Remanent Magnetization of Antiferromagnetic Nanoparticles by the Example of Ferrihydrite
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала
Synthesis and Magnetic Properties of Pr<sub>0.7</sub>Ca<sub>0.3</sub>MnO<sub>3</sub> Manganite Films
Superparamagnetic blocking of an ensemble of magnetite nanoparticles upon interparticle interactions
Neurogenesis in alzheimer's disease: A realistic alternative to neuronal degeneration?
The influence of the structure of foamed polycrystalline bismuth-based superconductors on their critical currents and current-voltage characteristics is studied. It is found that superconducting foams have a fractal structure, and the fractal dimension of the boundary between the normal and superconducting phases is estimated. The magnetic and transport properties of superconducting foams are investigated, and the current-voltage characteristics are obtained in a wide range of currents. The effect of percolation phenomena on vortex pinning in a foamed superconductor is considered. The current-voltage characteristics of the superconducting foams at the beginning of the resistive transition are found to be in good agreement with a model in which a magnetic flux is assumed to be trapped in the fractal clusters of a normal phase. " Pleiades Publishing, Inc., 2006.",,,,,,"10.1134/S1063783406020016",,,"http://hdl.handle.net/20.500.12104/40453","http://www.scopus.com/inward/record.url?eid=2-s2.0-33644985632&partnerID=40&md5=5fcbbd1b5fdfdc26b1b5d29146f6d432",,,,,,"2",,"Physics of the Solid State",,"20